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Electromagnetic Field Theory

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

  2.16.
 4.32.
 Infinity.
 Zero.

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Electromagnetic Field Theory
The Biot-savarts law is a general modification of

 Faradays law.
 Kirchhoffs law.
 Amperes law.
 Lenzs law.

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Electromagnetic Field Theory
The lagging of flux density behind the applied magnetising force is known as

All of these
 hysteresis.
 flux.
 permeance.

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Electromagnetic Field Theory
An electric field of 1.92 × 103 N/C is maintained across two plates separated by 0.015 m. Potential difference across plates will be

 28.8 V.
 2.88 V.
 1.4 V.
 14.40 V.

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Electromagnetic Field Theory
A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position

  - 5 × 10-5 uy N.
 5 × 10-5 uy N.
 5 × 10-5 ux N.
 5 × 10-5 uz N.

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Electromagnetic Field Theory
In H-plane metal plate lens the travelling wave front is

Neither accelerated nor retarded
Totally retarded
Retarded
Accelerated

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